Solar panels in Russia is beneficial to install and what the payback period

On the possibility of getting free electricity thought each of us, especially after received the next electricity bill. One such option is the installation of solar panels. In this article I will tell how effective their installation and how much time they will pay off.

Probably, it is known to all that the solar panels convert sunlight into electrical energy. And, apparently, it is easier to fully translate your private home on a stand-alone software free energy. But there are some very important nuances, let's look at them.

The cost of installation

The first and most important - is cost of.

At the time of this writing, the cheapest set of equipment with a hybrid inverter, more suited to a country house with a peak power of 1 kW and a maximum production per day 2 kWh (Under ideal conditions: the summer and the 12-hour solar day), it is worth 58 257 rubles.

A kit that somehow covers the needs of the average home with a peak power 4 kW and total production in 15 kW · h should already 218 973 rubles.

If we turn our eyes to see the favorite Chinese and presets them, then the cheapest offer on the peak capacity of 2 kW and total production per day to 4 kW can be purchased for 89 756 rubles, which is also quite a substantial amount.

Of course, the life of the solar panels themselves is large enough and is at least 20 years, but in this system, there is one weak link, namely, batteries, and they should be changed at least every 8 years.

The second point. The next important factor is the number of sunny days in your area. Of course, if you live, for example, in Sochi, then you have more than two hundred days of sunshine, and if you live in another region, where the sun is not too much?

Also note that you need to constantly monitor the cleanliness of the panels installed, and then to the shadow of the trees growing near does not overlap with direct access to the light. This means that regular inspection and cleaning of the panels must be your good habit.

payback period

Also important also a question of how the return on the whole of this installation. It is believed that it is justified for a period of 10 years. Let we make a rough calculation (in ideal conditions) payback installation cost 218,973 rubles in the Stavropol region. Thus, according to the meteorological services in my region about 185 sunny days (6 months), the cost per kilowatt is equal to 4.48 rubles. We assume that the average family consumption is equal to 250 kWh per month (8.5 kWh per day).

So, if we have half a year the sun shines, it will be assumed that at this time we completely covers their needs electricity, and the remaining six months we cover, for example, only 40% of its needs, and the missing 60% of the take from the public network power supply.

It turns out that we can save about 2100 kW (1500 kW of them on a sunny period and 600 kW cloudy), and in our economy money will be 2100 * 4.48 = 9408 rubles a year!

Now calculate how many years it will pay for our plant is in the Stavropol region: 218 973/9408 = 23.28 a year!

Agree, it turns out a very impressive figure. Of course, this is very approximate calculation does not take into account that the tariffs are increased we consistently twice a year, do not count the cost of replacing exhausted batteries and many other small spending.

With this in mind, let us assume that the payback period will be about 15 years.

Of course, this time can be further reduced if you buy the components separately and assemble the installation yourself, but it is unlikely in this scenario, you pay back it in less than 10 years.

conclusions

The very idea of ​​clean energy and autonomy is very attractive, but unfortunately, our reality is that in this way will be able to save afford a fairly wealthy people, and as long as the cost of components themselves will be so high, the solar plant will be element luxury. If the article was useful to you, you will appreciate it Like. Thank you for your attention!